CHECKIT

var := CHECKIT arg [option]

with option being either empty, in which case the type of the shell item or of the sourcecode item arg will be returned, or one out of the following keywords:

option	description	result on success	result on failure
/Trace	returns a semicolon seperated list of the call stack at the current line; arg can be the number of levels (including current level) or the name of a macro where the traceback should stop	shellid; macro:line; macro:line; ...
/Executable	check if arg is executable, i.e., if it is a command, instance, macro, or class	1 if arg is executable	0 otherwise
/Item	get type of the shell item arg	type of the shell item (cf. shell item types) if arg is a shell item	empty string otherwise
/Code	get type of the source code arg	macro, class, or spu if arg is a source code macro, class, or SPU.	empty string otherwise
/Visible	check if arg is a visible source code	1 if it is	0 if it is not
/File	get full sourcefile path of source code arg	full path if arg is a source code	empty string otherwise
/Style	get style of sourcecode arg	local, main, shell, sys, msgHandler, or global if arg is a source code of the respective type. Note: global is the default codestyle if none is specified in the code header	empty string otherwise
no option at all	get type of shell item or source code arg	item type (cf. shell item types) or code type (macro, class, or spu) if arg is a shell item, or a source code	empty string otherwise